Mass Air Flow Meter: Inspection

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT MASS AIR FLOW METER

Check the output voltage.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG), and negative (-) tester probe to terminal 2 (E2G).
3. Blow air into the MAF meter, and check that the voltage fluctuates.

Measure the resistance between terminals 4 (THA) and 5 (E2).

Standard resistance

MASS AIR FLOW METER

Condition	Specified Condition
-20°C (-4°F)	12.5 to 16.9 kΩ
20°C (68°F)	2.19 to 2.67 kΩ
60°C (140°F)	0.50 to 0.68 kΩ

If the result is not as specified, replace the MAF meter.

Fig 1: Inspecting Mass Air Flow Meter